Tom MacIntyre wrote:

That's a CTC-169. It is a good chassis, a bit old now. Was the picture
good, and did everything else work well before it developed the
problem?

Yes, it was working great, no sign of any problem, then yesterday it
just didn't turn on. Come to think of it, we had a power outage the
other day and I can't remember whether the last time we used the TV was
before or after the outage. But we get power outages all the time in
my area so I don't suspect that caused the problem.